I hope you have one of Saterns cut rifled barrels and it doesn't need to have the chamber touched up. I have a 20" cut rifled barrel from them and I had to send it back because of issues chambering any ammo. I made sure my brass was resized to minimum specs and it would still give me issues. Anyway after getting it back all I can say is it shoots great now. I am still working up loads but I do have this picture of my crappy shooting skills. What can I say but it was close to 90 degrees with light winds maybe gusting to 12 mph. This was 5 shots at 100 yards.